20029009

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 28957824

約数和(自身を除く): 8928815

約数列:

[1, 7, 11, 13, 17, 77, 91, 107, 119, 121, 143, 187, 221, 749, 847, 1001, 1177, 1309, 1391, 1547, 1573, 1819, 2057, 2431, 8239, 9737, 11011, 12733, 12947, 14399, 15301, 17017, 20009, 23647, 26741, 90629, 107107, 140063, 165529, 168311, 187187, 220099, 260117, 1178177, 1540693, 1820819, 2861287, 20029009]

約数ペア:

[(1, 20029009), (7, 2861287), (11, 1820819), (13, 1540693), (17, 1178177), (77, 260117), (91, 220099), (107, 187187), (119, 168311), (121, 165529), (143, 140063), (187, 107107), (221, 90629), (749, 26741), (847, 23647), (1001, 20009), (1177, 17017), (1309, 15301), (1391, 14399), (1547, 12947), (1573, 12733), (1819, 11011), (2057, 9737), (2431, 8239)]